# TIPP 2021

May 24 – 28, 2021
America/Vancouver timezone

## Development of a highly granular scintillator-tungsten electromagnetic calorimeter prototype for the CEPC

May 26, 2021, 6:06 AM
18m
Parallel session talk Experiments: Calorimeters

### Speaker

Yazhou Niu (University of Science and Technology of China)

### Description

A highly granular electromagnetic calorimeter has been designed and optimised with particle flow algorithms within the CALICE collaboration for precision measurements of Higgs and electroweak physics at future lepton collider experiments, including the Circular Electron Positron Collider (CEPC). Scintillator strips and silicon photomultipliers (SiPMs) are instrumented as sensitive layers and tungsten-copper alloy plates as absorber. Scintillator strips are individually wrapped with ESR foil and directly coupled with SiPMs. A prototype with 32 sampling layers and over 6700 channels (around $600\times600\times400~\mathrm{mm^3}$ in dimensions), has been constructed and commissioned in 2020. Long-term cosmic-ray tests were performed for quantitative studies on the key performance. This talk will cover key aspects in the prototype development, the latest status of commissioning, selected results of cosmic ray tests, as well as preparations for the future DESY beam tests.

TIPP2020 abstract resubmission? Yes, this would have been presented at TIPP2020. This study was supported by National Key Programme for S&T Research and Development (Grant NO.: 2016YFA0400400), from the Ministry of Science and Technology of China.

### Primary author

Yazhou Niu (University of Science and Technology of China)

### Co-author

Yong Liu (Institute of High Energy Physics, Chinese Academy of Sciences)